Machine for cutting metal bars



Patented June 26, 1894.

(No Model.) I

W. F. EVERETT. MACHINE FOR CUTTING METAL BARS, 6:0.' No. 521,785.

awww/6oz fw Y ETT, a citizen of theUnited States, residing at itappertains to make and use the same.

. claims.

wiLBURVFrsK EVERETT, or

Arisica.. f

ATENT RENO, ASSIGNOR TO\` DANIEL MILLER BULL, OE

VERDI, NEVADA.

MACHINE FORCUTTINGMETAL BARS, 80G.

sPEcIFIcATIoN forming 'part of Letters Application filed April 28, 189A,

To @ZZ whom it may concern: y

`Be it .known that I, WILBUR FI'sK EVER- Reno, in the county of Washoeand State of Nevada, have invented certain new and useful Improvementsin Machines for Cutting or Severing Metal Bars; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, when taken in connec-y t1on withl the accompanying drawings,such as will enable others skilled in theart'to which My inventionrelates to machines for cut# ting or severing metal bars; and it'consists of substantially the construction and combination of partsrepresented in the drawings referred to, and particularly pointed out inthe In the drawings, Figure 1 is a longitudinal vertical section of amachine constructed in accordance with my invention, with a part of theoperating lever and feed screw omitted; Fig. V2 a transverse verticalsection of the same, taken on line -x of Fig. l; and Fig. 3 is a detailview showing a nut for the feed screw composed of separable parts and adouble cam for opening and closing the same.

' is the cutting tool secured to a holder B which is reciprocated inacarriage or recessed block C by the action of a cam lever D Vpivoted touprights c formed on the block. The cam E of the lever passes over andengages an anti-friction roller G journaled in ears at the upper end'oftool holder B so as to depress the holder and cutting tool, and ametalstrlpor band F conforming to the shape of the cam is secured to thelever and passes beneath and engages the under side of the roller toraise the holder and tool. f v

The carriage or block C is formed with shoulders c c on its side 4thatfit and slide upon two rails H, II formed labove the bed plate I oftheframe.

J is a feed screw having a head at one end, rotatably secured to asocketed plate K fastened to the carriage. The other end of the screwpasses through a hole in a cross piece or plate L, connecting the endsof rails I-I, and engages a nut fastened to the cross piece.l The holein the crossv piece is slightly larger than the screw so that `when itit is desired Patent N0. y521385, dated. June 2.6, 1894.

Serialll'o. 509,363. (No model.)

to move the cutting tool back to a starting point the screw may passfreely through the hole. The nut on the cross piece is composed of twoparts P P pivoted'at p p and provided 55 at their other ends with pins QQ that are engagedby two oppositely shaped cam grooves R R formed in alever S fulcrumed to the cross piece. The cam grooves are so formed thatwhen the lever is moved in one direction 6o the parts of the nut will beseparated so as to release the screw and when turned back the parts willcome together again and be firmly held by the cams. A ratchet wheel Mrigidly secured to screw J is engaged by ase# ries of teeth n on aweighted pawl N pivoted to a bracket O'on the lower end of thereciprocating holder B. SpringTfastened at one end to the block CV andpressing at its other end against wheel M takes up anyk lost mo- 7o tionbetween the block and screw. The series of teeth n extenda distancenearly equal to the'greatest length of 4stroke of the holder B so thatone of the teeth of the ratchet wheel will always be engaged by theteeth of the pawl on an upward movement of the tool holder whether it begiven/a full or partial stroke and thus it is not required that thelever D be always returned to the same point to effect the feed. Thisobviously enables 8o the machine to be used under circumstances thatcould not be if the lever must be moved back to the limit of its stroketo cause the feed.

Iam aware thatvmachines have been devised forcutting metal bars havingparts that act on the main principles of my machine and their use andinode of operation are now well known. But by the particular construction and arrangement of parts inmy machine 9o I obtainv an exceedinglysimple and compact organization of such machines, enhance their use anddurability, utilize to a greater extent the power employed, and securean improved and more certain and eftectivelcoaction be- 9 5 tween theparts.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination with the guide-way or rails IFI H and cross piece L,of the carriage roo or block C movable on said guide-way, lever Dhaving' cam E and strip F, tool holder B reciprocable on carriage C andhaving antifriction roller G journaled thereto and between cam E andstrip F, feed screwJ having one end rotatably secured to carriage C andthe other engaging a threaded nut on the cross piece, the said uut,ratchet Wheel M rigidly secured to screw J, and a pawl N connected withtool holder B and adapted to engage the Wheel M, all substantially asshown and described.

2. The combination with the guide-Way or rails H I-I and cross piece L,of the carriage or block C movable on said guide-way, tool holder Breciprocable on carriage C, feed screw .I having one end rotatablysecured to the carriage and the other engaging a threaded nut on crosspiece L, the said nut composed of separable parts, means for openingsaid parts and also for securing them together,

ratchet wheel M rigidly secured to screw J, and a pawl N connected withtool holder B adapted to engage Wheel M, all substantially as shown anddescribed.

3. In combination, a guide-Way, a carriage or block C movable on saidguide-Way, a reciprocating tool holder B, feed screWJ rotatably securedto said carriage, ratchet wheel M rigidly secured to screw J, and a pawlN having a series of teeth fn to engage wheelM extending a distanceabout that of the maximum stroke of the tool holder, substantially asshown and for the purpose set forth.

In testimony whereof I hereto affix my signature in presence of twowitnesses.

WILBUR FISK EVERETT.

Witnesses: v

ALVIN M. LAMB, EDWIN BATES.

